/*
 * Copyright 2005-2006 the original authors and www.opengoss.org community.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.opengoss.web.service;

import java.io.IOException;

import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.opengoss.web.core.IWebPlugin;
import org.opengoss.web.service.IWSContainer;
import org.opengoss.web.service.IWServicelet;

/**
 * Servlet to export REST style web services. 
 *
 * @author Ery Lee(ery.lee@gmail.com)
 * @version 1.0 2006-11-20
 * @since 1.0
 */
public class WebServiceServlet extends HttpServlet {
	
	private ServletContext context;
	
	private IWSContainer container;
	
	@Override
	public void init(ServletConfig config) throws ServletException {
		super.init();
		context = config.getServletContext();
		IWebPlugin webPlugin = (IWebPlugin)context.getAttribute("WebPlugin");
		container = webPlugin.getContext().getServiceRegistry().getService(IWSContainer.class);
	}

	@Override
	protected void service(HttpServletRequest req, HttpServletResponse resp)
			throws ServletException, IOException {
		IWServicelet wServicelet = container.getWServicelet(req.getPathInfo());
		if(wServicelet == null) {
			super.service(req, resp);
		} else {
			wServicelet.service(req, resp);
		}
	}
	
}
